The term for organisms that occupy the same niche in different environments is known as ecological equivalents. These organisms share similar roles and adaptations despite being from different geographical areas or ecosystems. For instance, the marsupial mole in Australia and the placental mole in North America fulfill similar ecological roles as burrowing insectivores. This concept emphasizes how different species can evolve comparable traits to exploit similar ecological resources, demonstrating the adaptability and resilience of life in diverse habitats.